F01L2009/0432 - CPC Classification Index

ClassID:

137331 ⎘

F01L2009/0432 - CPC Classification

Classification description:

Sub-classes:

F01L2009/0434 » {Helical springs} 2
F01L2009/0438 » {Torsion springs} 0
F01L2009/044 » {Pneumatic springs} 0
F01L2009/0442 » {Means for varying the spring bias} 1
F01L2009/0444 » {Means for connecting springs to valve or anchor} 0

Recent Application in this class:

20190234253

ELECTROMAGNETIC ACTUATOR AND METHODS OF OPERATION THEREOF

20190211719

AN ACTUATION APPARATUS AND METHODS OF OPERATION THEREOF

20150322829

Valve driving device using piezoelectric actuator

20150194858

Rotary electromagnetic actuator

20150108381

Electromagnetic valve apparatus with nonlinear spring

15055138

Fluid-electric actuated reciprocating piston engine valves